Function bearssl::br_multihash_out

pub unsafe extern "C" fn br_multihash_out(
    ctx: *const br_multihash_context, 
    id: c_int, 
    dst: *mut c_void
) -> usize

\brief Compute a hash output from a multi-hasher.

The hash output for the concatenation of all bytes injected in the provided context since the last initialisation or reset call, is computed and written in the buffer pointed to by dst. The hash function to use is identified by id and must be one of the standard hash functions. If that hash function was indeed configured in the multi-hasher context, the corresponding hash value is written in dst and its length (in bytes) is returned. If the hash function was not configured, then nothing is written in dst and 0 is returned.

The context itself is not modified, so extra bytes may be injected afterwards to continue the hash computations.

\param ctx pointer to the context structure. \param id the hash function symbolic identifier. \param dst destination buffer for the hash output. \return the hash output length (in bytes), or 0.